MAX6639_REG_OT_LIMIT
res = regmap_read(data->regmap, MAX6639_REG_OT_LIMIT(channel), &val);
res = regmap_write(data->regmap, MAX6639_REG_OT_LIMIT(channel), TEMP_LIMIT_TO_REG(val));
err = regmap_write(data->regmap, MAX6639_REG_OT_LIMIT(i), 100);